/*
 * Author:
 *	Guido Draheim <guidod@gmx.de>
 *	Tomi Ollila <Tomi.Ollila@iki.fi>
 *
 * Copyright (c) 1999,2000,2001,2002 Guido Draheim
 *      All rights reserved,
 *	    use under the restrictions of the
 *	    Lesser GNU General Public License
 *          or alternatively the restrictions
 *          of the Mozilla Public License 1.1
 *
 * Description:
 *      although this file is defining a function called zzip_stat it
 *      will not need a real stat(2) exported by the Operating System.
 *      It will just try to fill the fields of the ZZIP_STAT structure
 *      of
 */

#include <zzip_lib.h>                                   /* exported...*/
#include <zzip_file.h>
#include <string.h>
#include <sys/stat.h>

#define ZZIP_USE_INTERNAL
#include <zzip_info.h>

/**
 * obtain information about a filename in an opened zip-archive without
 * opening that file first. Mostly used to obtain the uncompressed
 * size of a file inside a zip-archive. see => zzip_dir_open.
 */
int
zzip_dir_stat(ZZIP_DIR* dir, zzip_char_t* name, ZZIP_STAT* zs, int flags)
{
    struct zzip_dir_hdr* hdr = dir->hdr0;
    int (* cmp)(zzip_char_t*, zzip_char_t*);

    cmp = (flags & ZZIP_CASEINSENSITIVE) ? strcasecmp : strcmp;

    if (flags & ZZIP_IGNOREPATH)
    {
        char* n = strrchr((char*)name, '/');
        if (n) name = n + 1;
    }

    if (hdr)
        while (1)
        {
            register char* hdr_name = hdr->d_name;
            if (flags & ZZIP_IGNOREPATH)
            {
                register char* n = strrchr(hdr_name, '/');
                if (n) hdr_name = n + 1;
            }

            if (!cmp(hdr_name, name))
                break;

            if (!hdr->d_reclen)
            {
                dir->errcode = ZZIP_ENOENT;
                return -1;
            }

            hdr = (struct zzip_dir_hdr*)((char*)hdr + hdr->d_reclen);
        }

    zs->d_compr = hdr->d_compr;
    zs->d_csize = hdr->d_csize;
    zs->st_size = hdr->d_usize;
    zs->d_name = hdr->d_name;

    return 0;
}

/** => zzip_dir_stat
 * This function will obtain information about a opened file _within_ a
 * zip-archive. The file is supposed to be open (otherwise -1 is returned).
 * The st_size stat-member contains the uncompressed size. The optional
 * d_name is never set here.
 */
int zzip_file_stat(ZZIP_FILE* file, ZZIP_STAT* zs)
{
    if (!file) return -1;
    zs->d_compr = file->method;
    zs->d_csize = file->csize;
    zs->st_size = file->usize;
    zs->d_name = 0;
    return 0;
}

/** => zzip_dir_stat
 * This function will obtain information about a opened file which may be
 * either real/zipped. The file is supposed to be open (otherwise -1 is
 * returned). The st_size stat-member contains the uncompressed size.
 * The optional d_name is never set here. For a real file, we do set the
 * d_csize := st_size and d_compr := 0 for meaningful defaults.
 */
int zzip_fstat(ZZIP_FILE* file, ZZIP_STAT* zs)
{
    if (ZZIP_file_real(file))
    {
        struct stat st;
        if (fstat(file->fd, &st) < 0) return -1;
        zs->st_size = st.st_size;
        zs->d_csize = st.st_size;
        zs->d_compr = 0;
        return 0;
    }
    else
    {
        return zzip_file_stat(file, zs);
    }
}

/*
 * Local variables:
 * c-file-style: "stroustrup"
 * End:
 */